US1997117A - Automatic brake actuating device for trailed vehicles - Google Patents

Automatic brake actuating device for trailed vehicles Download PDF

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Publication number
US1997117A
US1997117A US717118A US71711834A US1997117A US 1997117 A US1997117 A US 1997117A US 717118 A US717118 A US 717118A US 71711834 A US71711834 A US 71711834A US 1997117 A US1997117 A US 1997117A
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US
United States
Prior art keywords
tractor
trailed
trailed vehicle
plunger
support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US717118A
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English (en)
Inventor
Quintavalle Umberto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Industrie Magneti Marelli SRL
Original Assignee
Fabbrica Italiana Magneti Marelli SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fabbrica Italiana Magneti Marelli SpA filed Critical Fabbrica Italiana Magneti Marelli SpA
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Publication of US1997117A publication Critical patent/US1997117A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • B60T7/20—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger specially for trailers, e.g. in case of uncoupling of or overrunning by trailer

Definitions

  • Such devices are subject to troubles in actual operation in that when said hose or cylinder is accidentally broken while the vehicles are correctly coupled and running or leakages occur there--,
  • the brake gears of the trailed vehicle are unduly operated to apply the brakes.
  • This invention has for its object an automatic brake actuating device for. the above stated purpose in which the brakes of the trailed vehicle wheels are actuated by a direct pull operative thereon at the time the trailed vehicle tends to become separated more than through a predetermined extent i'rom the tractor, said pull being maintained operative at the time of and atter the final separation of the trailed vehicle from its tractor.
  • Figure 1 is a diagrammatical vertical longitudinal section of a trailed vehicle and or aportion of the rear end of tractor coupled therewith, and provided with the device of this invention
  • FIG. 2 is a central section of the separate device on an enlarged scale with respect to Figure 1;
  • Figure 3 is a transverse section on line'xx of Figure 2 with the parts of the device in operative conditions; V
  • Figure 4 is asimilar transverse section on line XX of Fig. 2 with the device parts in positively released conditions.
  • reference I denotes the frame of a trailed vehicle mounted on wheels 28 which are provided with brake gears of anypreferred construction enclosed in brake drums 20 and operated by means of arms 4; said arms I are connected by tie bars 5 with the head of a transmission member hereinafter described in detail and mounted to reciprocatefwithin a stationary guiding support I fastened'on a transverse member I of the trailer frame I.
  • a coupling member as a pole and coupling bar 2 connects the trailed vehicle I with rear portion or header 3 bf a tractor in the well known manner.
  • Said transmission member has at its end oppo'site the head 6, a fork-shaped connecting 5 member 9 which is connected with the rear header 3 of the tractor by a flexible connection as a frope Ill passing through a guide member ll Provided in the front header 3
  • the rope III has an extent suflicient to remain in slack condition between the adjacent rear and front headers 3 and 3
  • the transmission member above referred to v and illustrated in detail in Figure 2 comprises a tie bar H in which astem 6' of head 6 is screwed to provide foradjusting the overall length of parts 6 and H, said tie bar ll having a head ll fastened in a cylinder l3 which is mounted to reciprocate within guiding support I.
  • a plunger l4 connected with a stem I1 is mounted to reciprocate and a spring 85 is located intermediate plunger.
  • 14 and apertured head iii of cylinder I 3 Opposite to tie bar head H to resiliently hold the parts in their position illustrated in Figure 2, with plunger [4 adjacent to tie bar head I l and stem l1 retracted within cylinder l3.
  • Said plunger stem l1 extends outwardly through apertured head l6 of cylinder I 3 and at its outer end it carries said connecting member 9 which may reciprocate in a,collar l8 of a head l9 closing theendof. support I opposite that carrying head I! passed through by tie bar ll.
  • the stem I! has on a portion of its length adiacent connecting member 9 ratchet means 20 adapted to cooperate with pawl means mounted on head IS, the cooperation of said ratchet and pawl means being such as to enable stem I! to freely move out from support I and to prevent its retraction into said support.
  • stem II in abovestated portion is shaped as a rack bar having a. circular cross section, it consisting 'of a succession of frustroconical parts having their smaller bases pointing towards connecting member 9, to produce triangular section intermediate collars and grooves as illustrated.
  • the pawl means intended to cooperate with 50 said ratchet portion 20 of stem ll consists of two jawsZl mounted to move transversely in support 1 in a space confined intermediate support head l9 and adjacent apertured partition 22 fastened in support I.
  • abuts by one of its ends on an intermediate fulcrum pin 23 and they are acted on by respective springs 24 tending to move them inwardly to engage stem I l; the ends of said jaws opposite the ones bearing on fulcrum pin 23 are engaged by a transversely elongated member 25 fast on a spindle 26 which is loosed in a seat of head l9 and has a manipulating outer head 21 for shifting ang'ularly said spindle 26 and transverse member 25 from outside of head l9.
  • are caused to spread by each subsequent tapering section 20 against the action of springs 24,,and they again come into engaging position at the rear of the larger base of each section Zll under the action of springs 24 as soon as said section-has passed beyond them, they being thus in condition to prevent stem I1 and parts connected therewith from retracting from extended position they have been carried into by the pull of rope l0.
  • stem l1 produces through parts l4, l5, l6, l3 and H a gradual and resilient pull on tie bar ll, owing to described provision of spring l5 intermediate plunger l4 solid with stem I1 and head 16 of cylinder l3 connected with head II and tie bar II, and thus the brake gears are gently actuated by head 6, tie rods-5 and arms 4 to gradually apply the brakes of wheels 28.
  • a device for automatically applying the brakes 10f a trailed vehicle when it is separated from its tractor in running comprising trailed vehicle brake actuating means, a member connected with the tractor for being shifted by a relative motion of said trailed vehicle and tractor, a support stationary on said trailed vehicle, a part mounted to move in said support, a plunger mounted to move with respect to said part, a resilient member operative between said plunger and part, said part being connected with one of said brake actuating means and tractor connected member and said plunger being connected with the other one of them, and means locking said tractor connected member in the final position into which it has been carried by said relative motion of said trailed vehicle and tractor.
  • a device for automatically applying the brakes of a. trailed vehicle when it is separated from its tractor in running comprising trailed vehicle brake actuating means, a member connected with the tractor for being shifted by a relative motion of said trailed vehicle and tractor, a support stationary on said trailed vehicle, a part mounted to move in said support, a plunger mounted to move with respect to said part, a 4
  • plunger mounted to move with respect to said part, a resilient member operative between said plunger and part, said part being connected with one of said brake actuating means and tractor connected member and said plunger being connected with the other one of them, and pawl means in said stationary support for engagement with said ratchet member, said ratchet member and pawl means cooperating to provide for free motion of said ratchet member in one direction under the tractor pull and for preventing its retractionin the opposite direction.
  • a device for automatically applying the brakes of a trailed vehicle when it is separated from its tractor in running comprising trailed vehicle brake actuating means, a ratchet member connected with the tractor for being shifted by a relative motion of said trailed vehicle and tractor, a support stationary on said trailed ve-' hicle, a part mounted to move in said support, a plunger mounted to move with respect to said part, a resilient member operative between said plunger and part, said part being connected with one of said brake actuating means and tractor connected member and said plunger being connected with the other one of them, and releasable pawl means in said stationary support for engage- I direction under the tractor pull and for preventing its retraction in the opposite direction.
  • a device'for automatically applying the brakes of a trailed vehicle when it is separated from its tractor in running comprising-trailed vehicle brake actuating means, a cylindrical ratchet member having a sequence of ratchet I tapering collars and grooves and connected with the tractor for being shifted by a relative motion oi said trailed vehicle and tractor, a' support stationary on said trailed vehicle, a part mounted to move in said support, a plunger mounted to move with respect to said part, a resilient member operative between said plunger and part, said part being connected with one of said brake actuating means and tractor connected member and said plunger being connected with the other one of them, pawl members mounted to move in-said stationary support transversely to the path of motion of said cylindrical ratchet member, and spring means forcing said pawl members into enga'gement with said ratchet collars and grooves .of said cylindrical ratchet member.
  • a device for automatically applying the brakes of a trailed yehicle whenit is separated from its tractor in running comprising trailed "vehicle brake actuating means, a cylindrical ratchet member having a sequence 'of ratchet tapering collars and grooves and connected with thetractor for being shifted by a relative motion of said trailed vehicle and tractor, a support stationary on said trailed vehicle, a part mounted to move in said support, a plunger mounted to move with respect to said part, a resilient member operative between said plunger and part, said part being connected with one of said brake actuating means and tractor-connected member and said plunger'being connected with the other one of them, releasable pawl members mounted to move in said stationary support transversely to the path of motion of said cylindrical ratchet member, spring means forcing said pawl members into engagement with saidratc'het collars and grooves of .said cylindrical ratchet member, and means for releasing said locking means.
  • a device for automatically applying the brakes of a trailed vehicle when'it is separated from its tractor in running comprising trailed vehicle brake actuating means, a cylindrical ratchet member having a sequence of tapering annular ribs and grooves and connected with the tractor for being shifted by a relative motion of said trailed vehicle and tractor, a support stationary om said trailed vehicle. a part mounted- .to move in said support a plunger mounted to move with respect to said part, a resilient mem-- cam member and means for shifting angularly" said'cam member to leave said 'pawl members in engagement with said cylindrical ratchet member or to separate said pawl members in opposition v to the action of said spring means.
  • a device for automatically applying the brakes of a trailed vehicle when it is separated from its tractor in running comprising trailed vehicle brake actuating means, a cylindrical ratchet member having a sequence of tapering annular ribs and grooves and connected with the tractor for being shifted by a relative motion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Of Braking Force In Braking Systems (AREA)
  • Braking Systems And Boosters (AREA)
  • Braking Arrangements (AREA)
US717118A 1933-04-10 1934-03-23 Automatic brake actuating device for trailed vehicles Expired - Lifetime US1997117A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT422381X 1933-04-10

Publications (1)

Publication Number Publication Date
US1997117A true US1997117A (en) 1935-04-09

Family

ID=11253938

Family Applications (1)

Application Number Title Priority Date Filing Date
US717118A Expired - Lifetime US1997117A (en) 1933-04-10 1934-03-23 Automatic brake actuating device for trailed vehicles

Country Status (3)

Country Link
US (1) US1997117A (de)
DE (1) DE627418C (de)
GB (1) GB422381A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2541312A (en) * 1945-06-04 1951-02-13 Wingfoot Corp Swingable vertical master brake cylinder
FR2614590A1 (fr) * 1987-04-30 1988-11-04 Guillaumot Rene Dispositif de securite pour freinage de vehicules remorques

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107970617B (zh) * 2017-11-25 2023-11-17 华强方特（芜湖）文化科技有限公司 一种锥形轮式的牵引车转向装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2541312A (en) * 1945-06-04 1951-02-13 Wingfoot Corp Swingable vertical master brake cylinder
FR2614590A1 (fr) * 1987-04-30 1988-11-04 Guillaumot Rene Dispositif de securite pour freinage de vehicules remorques

Also Published As

Publication number Publication date
GB422381A (en) 1935-01-10
DE627418C (de) 1936-03-14

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